XML 51 R37.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Investments - Schedule of Credit Quality of Investment Securities With Contractual Maturities or The Issuer of Such Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 996,783 | $ 1,040,455
% of Total Fair Value | 100.00% | 100.00%
AAA |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 297,030 | $ 321,975
% of Total Fair Value | 29.80% | 31.00%
AA |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 150,936 | $ 139,186
% of Total Fair Value | 15.20% | 13.40%
A |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 320,427 | $ 339,500
% of Total Fair Value | 32.10% | 32.60%
BBB |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 225,154 | $ 234,358
% of Total Fair Value | 22.60% | 22.50%
No Rating Available |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 3,236 | $ 5,436
% of Total Fair Value | 0.30% | 0.50%

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of available for sale securities with contractual maturities. + References No definition available. + Details
Name: | uve_AvailableForSaleSecuritiesContractualMaturities
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of certain securities (as a percentage) out of total fixed maturities securities. + References No definition available. + Details
Name: | uve_FixedMaturitiesFairValuePercentage
Namespace Prefix: | uve_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_AAAComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_AAComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_AComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_BBBComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_NotRatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |